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蛋白质作为人体重要营养物质,具有合成组织蛋白、激素、酶和核蛋白等生物活性调节物质。蛋白质功能的最终体现由约20种α—氨基酸(AA)来完成,其中,一碳单位供体AA,即丝AA(Ser)、甘AA(Gly)、蛋AA(Met)和组AA(His)直接参与合成调节物质,因此,它们水平的变化和代谢规律对体内调节物质水平影响甚大。长期以来,众多研究大多集中观察支链AA的代谢,而对一碳单位AA代谢研究颇少,尤其是青少年期间,人体生长发育
Proteins, as important nutrients in the human body, have the biological activity of regulating substances such as synthetic tissue proteins, hormones, enzymes and nucleoproteins. The final manifestation of protein function is accomplished by about 20 α-amino acids (AA), where one carbon unit donor AA, namely silk AA (Ser), glycine AA (Gly), egg AA (Met) ) Directly involved in the synthesis of regulatory substances, therefore, their level of changes and metabolic regulation of the body have a great influence on the level of regulatory substances. For a long time, most researches focus on the metabolism of branched-chain AA, but few studies on AA metabolism of one-carbon unit, especially in adolescents,